Madrid, Spain is the latest city to be introduced to the 3D Buildings layer in Google Earth.

The City of Madrid contains scores of beautiful structures ranging from art museums and classical monuments to palatial government buildings. The prevalence of architectural wonders may explain why passionate geo-modelers have created thousands of models there (using both Google SketchUp and Google Building Maker) -- the largest concentration of 3D models anywhere the world!

If I were to visit Madrid for real, I think I'd want to stay at the Palace Hotel, which is a short walk to the famous Prado Museum (one of my all-time favorite models in Google Earth) where you can fly inside and experience the great works of art.